The only reason anybody dropped the files is because if you are going to develop a crack then you need them, unless you happen to be Empress or are an absolute god in ida/ghidra/x64dbg and have a massive hard on for tedious work they won't do you any good. I presume some people might also want to rip assets out of the pak files.
If it makes you feel any better you really aren't missing out on much. There isn't anything of note in the latest build that wasn't in 0.4.9 other than a new character.
To sum up the rest of the changes they have a new map but it doesn't really change anything about the game. They have stripping and masturbation, which are just short animations on a loop (the masturbation is literally a few seconds in a loop without even a clear climax) and they have some dumb thing about letting people rail your character when you're offline if you count that as a feature.
Other than that it's the same animation viewer it's been for the last few years, you just stand around playing the same animations over and over to complete daily quests to unlock the animations that you'll just get straight away if you download 0.4.9. They've also removed VR support, the graphics look a bit worse (presumably their optimization work) and they've removed some of the better animations for the three characters we had in 0.4.9.